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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Renesas HZ6C3LTA-E

Name: HZ6C3LTA-E
Brand: Renesas
SKU: HZ6C3LTA-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HZ6C3LTA-E

Manufacturer:: Renesas

Category:: Single Zener Diodes

Package:: DO-204AH, DO-35, Axial

Datasheet:: HZ6C3LTA-E.pdf

Description:: DIODE ZENER 6.3V 400MW DO35

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Product details

Overview

HZ6C3LTA-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 6.1–6.4 V at 0.5 mA test current, 60 Ω dynamic resistance, 400 mW power dissipation, and DO-35 glass package - used in reference supplies for ADCs, sensor signal conditioning, and low-drift op-amp bias networks.

For engineers reviewing the HZ6C3LTA-E datasheet, HZ6C3LTA-E pinout, HZ6C3LTA-E application, or HZ6C3LTA-E equivalent, key selection criteria include zener voltage tolerance (±0.3 V), low noise performance (≈1/3–1/10 of standard HZ series), temperature coefficient (−0.02 %/°C typical at 6.2 V), and thermal derating above 25°C ambient.

Technical Context

This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across varying load currents via controlled reverse-bias breakdown. Its low dynamic impedance (60 Ω max at 0.5 mA) ensures minimal output variation under current transients, while its −55°C to +175°C storage range supports industrial and automotive under-hood environments.

The HZ6C3LTA-E exhibits a negative temperature coefficient near 6.2 V (−0.02 %/°C), enabling predictable drift compensation in multi-diode references. Its DO-35 package provides standardized lead spacing (2.5 mm) and thermal resistance suitable for PCB-mounted low-power regulation without heatsinking.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	6.1–6.4 V at I_Z = 0.5 mA - defines tight regulation window for 6.2 V nominal reference designs.
Dynamic Resistance (r_d)	60 Ω max at I_Z = 0.5 mA - limits output voltage shift under ±1 mA load changes to < ±60 mV.
Power Dissipation (P_d)	400 mW at T_a = 25°C - supports continuous operation up to ~100 mW at 85°C ambient after derating.
Reverse Leakage (I_R)	1 μA max at V_R = 2.0 V - minimizes error current in high-impedance reference nodes.
Junction Temperature (T_j)	175°C maximum - enables reliable operation in enclosed enclosures or near heat sources.
Temperature Coefficient (γ_Z)	−0.02 %/°C typical at 6.2 V - allows predictable drift modeling for temperature-compensated references.

Pinout & Package

Package: DO-35 glass axial-leaded package (JEITA code GRZZ0002ZB-A), 2.0 mm body diameter, 26 mm overall length, 2.5 mm lead spacing, 0.13 g mass. Cathode identified by navy-blue band.

Pin/Terminal	Circuit Role	Design Meaning
1 (Banded End)	Cathode	Connected to regulated output node; reverse-bias terminal where zener breakdown occurs.
2 (Non-banded End)	Anode	Connected to circuit ground or lower-potential rail; completes current path during regulation.

Key Features

Feature	Design Value
Low-noise Zener structure	Diode noise level ≈1/3–1/10 that of standard HZ series - critical for audio preamps and precision measurement front-ends.
Stable low-impedance regulation	60 Ω dynamic resistance at 0.5 mA - maintains < ±30 mV output deviation over ±0.5 mA load steps.
Wide operating temperature range	−55°C to +175°C storage; functional regulation maintained up to T_j = 175°C - suitable for under-hood or industrial control cabinets.
Tight zener voltage tolerance	±0.3 V absolute spread (6.1–6.4 V) - eliminates need for external trimming in mid-precision 6.2 V references.
Low leakage current	≤1 μA at 2.0 V reverse bias - preserves accuracy in high-Z bias networks and battery-powered sensor nodes.

Applications

High-Stability ADC Reference	Low-Noise Op-Amp Biasing
Use Scenario: Providing reference voltage to 16-bit SAR ADCs in data acquisition systems where supply ripple and thermal drift directly impact ENOB. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise 6.2 V基准 for ADC internal scaling and external analog front-end gain setting. Use Value: Low dynamic impedance (60 Ω) suppresses supply-induced errors; low noise prevents added quantization uncertainty in sub-LSB measurements.	Use Scenario: Setting bias points for rail-to-rail input op-amps in medical ECG amplifiers requiring ultra-low input-referred noise. IC Role / Device Role / Timing Role: Zener-based dual-rail bias generator producing stable mid-supply reference for op-amp common-mode input range. Use Value: Noise reduction vs. standard Zeners improves SNR by >10 dB in 0.05–150 Hz bandwidth; low leakage avoids DC offset drift in pA-level input stages.
Industrial Sensor Signal Conditioning	Programmable Current Source Reference
Use Scenario: Regulating excitation voltage for RTD or strain-gauge bridges in factory-floor temperature/pressure transmitters exposed to wide ambient swings. IC Role / Device Role / Timing Role: Primary voltage reference for bridge excitation and instrumentation amplifier gain-setting resistors. Use Value: −0.02 %/°C tempco enables < ±0.1% full-scale error over −40°C to +85°C; 400 mW rating supports 10 mA bridge drive without derating.	Use Scenario: Setting reference voltage for Howland current sources driving 4–20 mA loop transmitters in process automation PLC modules. IC Role / Device Role / Timing Role: Stable 6.2 V node defining compliance voltage for precision current mirror control loops. Use Value: Tight 6.1–6.4 V tolerance ensures current accuracy within ±0.5% across production lots; low rd minimizes loop gain variation with load changes.

High-Stability ADC Reference

Low-Noise Op-Amp Biasing

Use Scenario: Providing reference voltage to 16-bit SAR ADCs in data acquisition systems where supply ripple and thermal drift directly impact ENOB.

IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise 6.2 V基准 for ADC internal scaling and external analog front-end gain setting.

Use Value: Low dynamic impedance (60 Ω) suppresses supply-induced errors; low noise prevents added quantization uncertainty in sub-LSB measurements.

Use Scenario: Setting bias points for rail-to-rail input op-amps in medical ECG amplifiers requiring ultra-low input-referred noise.

IC Role / Device Role / Timing Role: Zener-based dual-rail bias generator producing stable mid-supply reference for op-amp common-mode input range.

Use Value: Noise reduction vs. standard Zeners improves SNR by >10 dB in 0.05–150 Hz bandwidth; low leakage avoids DC offset drift in pA-level input stages.

Industrial Sensor Signal Conditioning

Programmable Current Source Reference

Use Scenario: Regulating excitation voltage for RTD or strain-gauge bridges in factory-floor temperature/pressure transmitters exposed to wide ambient swings.

IC Role / Device Role / Timing Role: Primary voltage reference for bridge excitation and instrumentation amplifier gain-setting resistors.

Use Value: −0.02 %/°C tempco enables < ±0.1% full-scale error over −40°C to +85°C; 400 mW rating supports 10 mA bridge drive without derating.

Use Scenario: Setting reference voltage for Howland current sources driving 4–20 mA loop transmitters in process automation PLC modules.

IC Role / Device Role / Timing Role: Stable 6.2 V node defining compliance voltage for precision current mirror control loops.

Use Value: Tight 6.1–6.4 V tolerance ensures current accuracy within ±0.5% across production lots; low rd minimizes loop gain variation with load changes.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode voltage reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MMBZ5226BS-7-F	Zener voltage 3.3 V (fixed), SOD-123 package, 200 mW Pd, 17 Ω rd at 20 mA - higher current, lower voltage, surface-mount only.	Not suitable for 6.2 V reference; requires redesign of bias network and layout for SMT placement.	Select only if system uses 3.3 V rail and requires SMT footprint; not drop-in for HZ6C3LTA-E.
Vishay BZX55C6V2-TR	Zener voltage 6.2 V ±5%, DO-35 package, 500 mW Pd, 10 Ω rd at 5 mA - tighter voltage spec but higher test current and rd sensitivity.	Higher rd at low current (≈100 Ω at 0.5 mA) degrades low-current regulation; better for higher-power 6.2 V refs.	Prefer when 5 mA operating current is acceptable and tighter nominal Vz (6.2 V ±5%) outweighs noise and low-I_Z performance.

Compared with MMBZ5226BS-7-F and BZX55C6V2-TR, the HZ6C3LTA-E delivers superior low-current regulation stability and industry-leading noise performance at 0.5 mA, making it optimal for precision analog systems where supply current is constrained and spectral purity is critical.

Availability

HZ6C3LTA-E is available at Aetrix Electronics and suitable for industrial sensor interfaces, precision data acquisition systems, and low-noise analog front-ends requiring stable component supply with traceable lot history and long-term lifecycle support.

Supply support for HZ6C3LTA-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT applications, with headquarters in Tokyo and design centers worldwide.

The HZ-L Series was developed specifically for low-noise, high-stability voltage reference applications in industrial instrumentation and precision analog signal chains, emphasizing reduced flicker noise and tight zener voltage distribution.

FAQ

What is the exact zener voltage range specified for HZ6C3LTA-E?

The HZ6C3LTA-E has a guaranteed zener voltage range of 6.1 V to 6.4 V when tested at I_Z = 0.5 mA and T_a = 25°C. This 0.3 V total spread reflects tight binning for mid-precision 6.2 V reference use without external trimming. The value is measured using DC test conditions per Renesas REJ03G0182-0300 Rev.3.00.

Does HZ6C3LTA-E have a specified noise performance metric?

Yes - the HZ6C3LTA-E datasheet states its noise level is approximately 1/3 to 1/10 that of the legacy HZ series Zener diodes. While no quantitative nV/√Hz value is published, this comparative specification confirms its suitability for low-noise applications such as audio preamplifiers and high-resolution sensor signal conditioning where broadband noise directly impacts system SNR.

What is the maximum allowable junction temperature for HZ6C3LTA-E?

The absolute maximum junction temperature (T_j) for HZ6C3LTA-E is 175°C. This rating enables reliable operation in thermally demanding environments such as industrial motor drives or automotive engine control units, provided PCB copper area and ambient airflow maintain junction temperature below this limit under worst-case power dissipation (400 mW at 25°C, derated linearly above).

Is HZ6C3LTA-E RoHS compliant and lead-free?

Yes - HZ6C3LTA-E complies with the EU RoHS Directive and is lead-free. Renesas confirms environmental compliance in its product documentation and public declarations. The DO-35 glass package contains no restricted substances above threshold limits, and the device meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for through-hole assembly.

Can HZ6C3LTA-E be used in place of standard HZ6.2 series diodes?

Yes - HZ6C3LTA-E is a direct replacement for legacy HZ6.2 variants in the same DO-35 package, offering identical pinout, voltage range, and mechanical form factor. It improves upon them with lower noise, lower dynamic resistance (60 Ω vs. 80–150 Ω), and tighter V_Z tolerance, making it a functional upgrade without layout or schematic changes.

HZ6C3LTA-E Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: DO-204AH, DO-35, Axial

Packaging:: Bulk

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 6.3 V

Tolerance:: ±2.38%

Power - Max:: 400 mW

Impedance (Max) (Zzt):: 60 Ohms

Current - Reverse Leakage @ Vr:: 1 µA @ 2 V

Voltage - Forward (Vf) (Max) @ If:: -

Operating Temperature:: 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-35

HZ6C3LTA-E FAQ

1.How can I place an order for HZ6C3LTA-E through Aetrix?

Please submit a Request for Quotation (RFQ) for HZ6C3LTA-E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for HZ6C3LTA-E reliable?

The price and inventory of HZ6C3LTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ6C3LTA-E is usually 5 days.

3.What payment methods are accepted for HZ6C3LTA-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ6C3LTA-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HZ6C3LTA-E?

HZ6C3LTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HZ6C3LTA-E order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for HZ6C3LTA-E?

For technical support, including HZ6C3LTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ6C3LTA-E requirements.

6.How does Aetrix verify that HZ6C3LTA-E is sourced from the original manufacturer or authorized distributors?

All HZ6C3LTA-E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HZ6C3LTA-E meets industry standards.

7.What is the process for return or replacement of HZ6C3LTA-E?

All HZ6C3LTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ6C3LTA-E, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The HZ6C3LTA-E part is unused and in its original packaging.

Return procedure for HZ6C3LTA-E:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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